Synthesis of phenothiazine‐based electroluminescent polymers with a stable emission property |
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| Authors: | Yingliang Liu Jianghui Li Huayu Cao Shaokui Cao Zhijian Chen Lixin Xiao Qihuang Gong |
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| Affiliation: | 1. State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, P.R. China;2. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450052, P.R. China |
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| Abstract: | Two phenothiazine‐based polymers were synthesized by the Heck reaction of 3,7‐divinyl‐N‐octyl‐phenothiazine with 3,7‐diiodo‐N‐octyl‐phenothiazine and 5,8‐dibromo‐2,3‐diethylquinoxaline. The polymers were characterized by the measurements of 1H‐NMR, IR, TG, GPC, CV, UV–Vis, and FL. The results indicated that the introduction of quinoxaline group makes the absorption, PL, and EL emission maxima red‐shifted. The EL emission maximum and the CIE 1931 coordinate value are stabilized at a constant value with the increase in operating voltages. Therefore, the polymers have a stable electroluminescent emission property. Copyright © 2008 John Wiley & Sons, Ltd. |
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| Keywords: | electroluminescence organic/polymer light‐emitting diode phenothiazine conjugated polymer stable emission |
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